Which of the following is the ultimate source of energy for us?
Answer : C. Solar
In which of the following kinetic energy is converted into electrical energy?
Answer : D. All of these
A body of mass 1kg is attracted by the earth with a force which is equal to
Answer : A. 9.8 N
Which of the following is a disadvantage of renewable energy?
Answer : D. Unreliable supply
Which of the following is normally used in solar cookers for trapping solar energy?
Answer : C. Mirrors
A Solar cell is an electrical device that converts the energy of light directly into electricity by the
Answer : B. Photovoltaic effect